Jump-gate



2 sheets-sheet 1.. 1

4 (No Model.)

J. H. HARRIS 8a W. POOL.

JUMP GATE.

Paighented Mam. l, v1887.

N. Perses. Pnmumogmpner. walmngm. n.c

-J. H. HARRIS an W. POOL.v

JUMP GATE (No'Moael.)

No. 358,740. Patented naar',1,1887..l

E E u lllll'llllllllllllllllllll'- witnesses Frn'rns Marten JUMP- GATE.

SPECIFICATION forming part of Letters Patent No. 358,740, dated Marcil1, 1857.

Application filed June E15, 1886. Serial No. 206,954.

To LZZ whom, it may concern.-

Be itknown that we, J AMES Hirn HAnnis and WILLIAM POOL, citizens of theUnited States, residing at Pittsville, in the county of 5 Johnson andState of Missouri ,have in vented a new and useful Improvement in J umpAGates, of which the following is a specication.

Our invention relates to an improvement in jump-gates, and it consistsin the peculiar construction and combination of devices,that will bemore fullyset forth hereinafter, and particularly pointed ont in theclaims.

In the drawings, Figure lis a side elevation of a gate embodyingouriinprovements. Fig. 2 is a top plan view of the same. Fig. 3 is adetail view showing the plate which carries the pulleys. Fig. 4 is adetached sectional view showing the pivoting of the rocking bars.

Arepresents the post against which the gate opens. B represents the postagainst which the gate closes, and C represents the pair of posts whichare located midway between the posts A and B, and out of line with thesaid posts, thus leaving an uninterrupted way between the posts A and B.

D represents a transverse bolt orshaft, which extends through horizontalopenings that are made in the posts C, near the lower ends there` of. Tothe said bolt or shaft is secured a pair o' rocking bars, E. The outersides of the said bars bear against the opposing inner sides ot' theposts G. The upper ends ofthe barsE are connected together by atransverse plate, F'.

On the upper ends of the posts C is located a plate, F, which isprovided with slots j' near its extremities. Between the slots f anddirectly in the center of the plate is a transverse slot or opening, j",in which is journaled apair of grooved pulleys, G.

II represents an arch or casting which is provided atits lower ends withfeet h, that itin the openingsf, and in the said arch or casting isjournaled a pair of pulleys, I, which are arranged at right angles tothe pulleys G and above the latter. BlatesK bear upon the ends of theplate F and the feet 7i of the arch or casting, and bolts or screws Lpass through the said plates K and F, thus securing the plates K to theplate F, and also securing the 5o said plate F to the upper ends of theposts C.

As the plates K bear upon the feet of the arch (No inodelfi orcasting,it will bereadily understood that the said arch or casting isthereby firmly secured to the plate F. In the post A is a vertical slot,A', and in the lower ends of the said slot is journaled an antiAfrictionroller, A2.

IVI represents the gate, which may be made in any preferred suitablemanner, and composed of any suitable material. The central portion ofthis gate is pivoted between the centers of the rocking bars E by meansof a pivotal transverse bolt, N, which passes throhgh the centers of thesaid gate and rocking bars. From the rear end ofthe gate projects :arearward-extending arm, O, the length of which is a little in excess ofthe length of the gate, and the said arm passes through the slot A andbears upon the roller A2.

P represents a latch which is attached to the front end of the gate, andis provided with forwardly-extending arms,which bear against oppositesides of the post B, thereby preventing the gate from being movedlaterally when the gate is closed.

R represents posts, one of which is located on each side of the gatewayin line with the post C and at a suitable distance from the said posts.To the upper ends of the posts B are journaled pulleys S.

T represents a pair of ropes or cords,whicl1 have one end attached tothe plate E. From the said plate the said cords or ropes extend betweenthe pulleys G in the plate F, and pass under the said pulleys, throughthe center ot' the opening j", and from thence the said cords or ropespass over the pulleys I, down through the inner ends of the openings f,and from thence outwardly over the pulleys S on the posts R. To theextreme outer end of the cords or ropes T are attached weights T, thefunction of which is to keep the said cords or ropes taut.

The operation of our invention is as follows: The gate is closed when inthe position indicated in solid lines in Fig. 1. In order to open thegate, a person approaching it from. either side takes hold of one of theropes or cords and pulls upon it, thereby raising the rocking bars E,and also raising the gate. Just before the bars E reach a verticalposition, the person opening the gate jerks upon the rope, thus causingan additional impulse to be imparted.

ICO

to the rocking barsand the gate, thus preventingthe rocking bars fromcoming to a standstill when in a vertical position, and carrying themrearwardly over the center of their pivotal bolt or shaft D. The gravityof the gate and the rocking bars, .when the latter have passedrearwardly over the center of their pivotal bolt, as hereinbeforestated, causes the gate to be lowered against the post A, thus leavingthe space between the posts G and the post B entirely unobstructed. Ihefunction of the rearward-extending arm O of the gate, which passesthrough the slot in the post A, is to direct the gate and keep it inastraight line when being opened or closed. After the person has passedthrough the gateway he takes hold of the rope 'I on the opposite sideand repeats the operation before described, thus causing the gate toclose. A

A gate thus constructed is cheap and simple, is strong and durable, andmay be operated in a snow-driftno matter how deep, thus preventing thegate from being blockaded by the snow and rendered inoperative.

Having thus described our invention, we claiml. The combinationofthejulnp-gate and the rocking arms to which the gate is pivoted withthe'vertical posts C, the plate F, connect- `ing the upper ends of thesaid posts and having the opening f', and the pulleys G, journaled inthe said opening, and the arch or casting H, secured to the plate Fabove the latter and carrying the pulleys I, and the cords or ropesattached to the rocking bars and passed between the pulleys G and overthe pulleys I, substantially as described.

2. The combination of the post A, having the slot A', the post B,against which the gate closes, the posts C, located between the posts Aand B, the plate F on the upper ends of the posts C, having the openingsf and the central opening, f', the pulleys G, journaled in the opening fthe arch or casting H, having the feet h, adapted to fit in theopeningsf, the pulleys I, journaled to the said arch or casting, theplates K, secured on the ends of the plate F and bearing on the feet h,the rocking bars E, `journaled between the lower ends of the posts C,the gate pivoted between the said bars and having the rearward-extendingarm passed through the slot in the post A, and the cords or ropesattached to the rocking bars and passed between the pulleys G and overthe pulleys I, substantial] y as described.

In testimony that we claim the foregoing as our own we have heretoaiiiXed our signatures in presence of two witnesses.

JAMES HIIE HARRIS. TILLIAM POOL.

Vi tn esses:

J As. G. HATFIELD, XV. L. Woonnnn.

